update SB3
CMIP improvements
Fix GOES-16 satellite_id default
optional attributes and filename fixes
release candidate with updated scales and offsets as well as julian date in CMIP filenames
CMI tweaks for AHI
more CMI and build script fixes
fixes for CMI and build
revised central wavelengths from JGerth
--cmi and HSD cwl sync to HCAST
performance fixes
packaged as axi-tools-v20170927
beta packaged
stable but slow on meelo 2017-05